Ms. Pamela Solly reports

VISTA GOLD CORP. FILES TECHNICAL REPORTS FOR THE MT TODD GOLD PROJECT 15 KTPD FEASIBILITY STUDY

Vista Gold Corp. has filed the feasibility study technical reports for its Mount Todd gold project located in Northern Territory, Australia. A technical report summary was prepared in accordance with Item 1300 of Regulation S-K under the U.S. Securities and Exchange Act of 1934, as amended and filed on EDGAR. A companion technical report for Canadian purposes was prepared in accordance with Canadian National Instrument 43-101 (Standards of Disclosure for Mineral Projects) and filed on SEDAR+.

Vista previously announced the results of the feasibility study and the updated mineral resources and mineral reserves estimates in its news release dated July 29, 2025, which confirm strong economics for the project based on the resized 15,000-tonne-per-day operation.

Mount Todd technical report filings

The S-K 1300 report was filed on Sept. 11, 2025, and is titled "S-K 1300 Technical Report Summary -- Mt Todd Gold Project -- 15 ktpd Feasibility Study -- Northern Territory, Australia," with an effective date of July 29, 2025. The NI 43-101 report was filed on Sept. 11, 2025, and is titled "NI 43-101 Technical Report -- Mt Todd Gold Project -- 15 ktpd Feasibility Study -- Northern Territory, Australia," and dated Sept. 11, 2025 (with an effective date of July 29, 2025). The S-K 1300 report and the NI 43-101 report are available on Vista's website.

The scientific and technical information contained in this news release has been reviewed and approved by Maria Vallejo, PEng, FAusIMM, Vista's director of projects and technical services, a qualified person as defined by S-K 1300 and NI 43-101. The company adheres to Canadian Institute of Mining, Metallurgy and Petroleum Best Practices Guidelines in conducting, documenting and reporting activities on the project.

About Vista Gold Corp.

Vista holds the Mount Todd gold project, a leading development-stage gold deposit located in the Tier 1 mining jurisdiction of Northern Territory, Australia. The project offers strong project economics, significant initial production, expansion potential, development optionality, exploration upside, advanced local infrastructure and broad community support.

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